Superheater.



G. R. HENDERSON '& W. l. GANTLEY.

SUPERHEATER.

(i. R. HENDERSON & W. l. CANTLEY.

SUPERHEATER.

APPLICATIQN FILI-:D sEPT.27 |911.

www@ Patented 31m@ 8,1915.

G. R. HENDERSONL W. l. CANTLEY.

SUPERHEATER.

APPLICATION FILED SEPT. 27, 1911.

Pmnte 5mn@ 8, 1915.

4 SHEETS-SHEET 4.

GEORGE R. HENDERSON AND lVLLllT/I CANTLEY, OF PHILADELPHIA, PENNSYL-VANIA,

ASSIGNES. BY MESNE ASSIGNMENTS, TC LOCOMOT'IYE SUPERHEATER COMPANY, OFWILMINGTON, DELAVBE; li. CORPORATION OF DELAVARE.

Specification of Letters Patent.

` SUPERHEATER.

Patented J une 8, i915.

Application led September 27,1911. Serial No. 651,501.

To all whom it may concern Be it known that We, Gnonon R. HemmusoN andWILLIAM l. CANTLEY, citizens of the United States, residing inPhiladelphia, county of Philadelphia, State of Pennsylvania, haveinvented certain Improvements in Superheaters, of which the following isa specification.

This invention relates to certain improve# ments 1n superheaters of thetype having .supcrheater elements or pipes Which extend p into the tubesof a boiler.

The invention is particularly adapted lto boilers of the locomotivetype, in which one part of the superheater is located in the smoke boxand the sl'iperheater eleineu forming the other part extend into theflue tubes of the boiler. 1

One object of this invention is to constructthe superheater so that'any`of the superheating elements can be removed Without re` moving' anyother superheating elements or dismantling 4the superheater and so that,

when one element has been detached, the

I header.

In the accompanying dravvingsz-Figure 1,*1s a longitudinal sectionalview of. sufl.-

cient of a locomotive boiler to illustrate our invention, the sectionbeingon the line 1,-1t

I i Fig. 2; Fig. 2, is a transverse sectional view i Fig 8, is aVperspective view `of the 'headset' :one superhetnzgn' element; and, Fig.9, 17s a on the line 2.-2, Fig. 1v; Fig. 3, is an en-` lar-ged sectionalplan view on the line 3 3, Fig. 2; Fig. 1g-is an and View of one of thepipe heads; Fig -5, is a sectional view on the line 575, Fig. '3; Fig 6,is a sectional view on the line 6-G, big. l, showing a portion offtheheader with the pipe heads removed; Figi?, is a perspective vien7 of theheader:

perspective View ofthe wedge used for attaching the pipe heads to theheader.y

A is the shell ofy a locomotive boiler, 1n

vthe present instance having a tube sheet a .separating the main body ofthe boiler A from the smoke box A2.

a2, are therordinary Hue tubes of the boiler and a', a are flue tubes ofgreater diameter Ainto which the pipes of the superheater elementsextend.

[B is the superheater consistingof a header located in the smoke boxr ofthe boiler and havingsuperheater elements or circulating pipes z' whichextend into the large flue tubes of thel boiler to any extent desired.

A superheater of this particular ty ie is old and our invention, as'before remarked,

rirrnnr torrione-q relates to a particular construction of superheater,scribe.

D is the header which is located in the smoke boX. This header is madein the manner clearly illustrated in the perspective' view, `Fig. 7, andhas an upper manifold d and a' lower manifold d united by alternatelydisposed hollow columns c, c. The columns c are closed at their upperends and communicate at vtheir lower ends with the lower manifold d. Thealternate columns 0 are closed at their lover ends and com# municate attheir upper ends with the upper manifold d. This upper manifold in whichWe will non7 proceed to deturn communicates, through a pipe C, With Ythe pipe Cleading from the steamspace of theboiler. The lower manifold dhas an opening d2 at each end and is coupled to the pipes D leading tothe steam ports of the cylinders. These pipes may communicate with thepipes leading to the cylinder, either p if through thebottom of thesmoke boX or through the side, as desired. Mountedin the space betweenthe alternate columns c, c

are the lpipe heads E to Which the superheat ing elements e'. areconnected. The heads are made in the form illustrated in Fig. 8, and theend of the pipes z' are screw threaded, as illustrated in Figf, and arescrewed -into the threaded openings c of the heads. The

heads ma v,loe made in a single piece andy completely finished, ythensevered, as illustrated in Fig. 8. y

The openings @With which the pipes communicate connect with transverseopenings e', and these openings are in such a position in the header, asillustrated in Fig. 3, as to aline with the vopenings c2, c3.' Theopenings c2 are in the walls of the columns c, while the openings c3 arein the Walls of the columns o. The other inner ends of the pipes c' areconnected by a coupling z" formed, as illustrated in Fig. 1, so that thesteam will pass from the columns c, through the `ropenings or passagesc3, e ande, then through .a pipe z', coupling i. and return through theother'pipe z' and intp the Ycolumns c; the steam being superheated asittravels through the pipes which extendV into the flue tubes a', astheproducts of combustion come vin direct contact with the said pipes. y 6i The heads of the superheater sections are secured to the main headerin the following manner Each head has a projecting rim e2 which extendsinto one of the openings4 c2 'or c of the main header, and located in anannular groove surrounding the said opening is a coppei` ring h, in thepresent .in--

heads are spread apart, makes a steam tiglit .joint between the headsand the header.

In order to force the heads apart, We provide a bolt N with a conicalwedge M which is adapted to be inserted into a conical opening m; partlof said opening being in Aone head and part inftheother head `asillustrated in Fig..`8. The head n of the bolt/ lgether by the couplingsz". The heads E, E

are .then located in one of the channels between the columns, c, c ofthe header D and the bolt N with the wedge M is passed through theopening mbetween the heads and the nut is placed in position and the ibolt turned so as to force the wedge into the opening, spreading theheads E, E apart and against the columns of the header D. When itisnecessary to detach one of these sections the bolt N may be unscrewedfrom the nut n so as to permit the wedge M to be removed and allowingthe heads to come together so that the .projections e2 will clear thecolumns of the header, after which the two heads with the pipes attachedcan be readily removed fromI the opening in the header.

In the drawings, we have shown two superheating elements in .each fluetube and we have staggered the heads to which these' i elements areconnected, so that the heads of the lower element are attached near theoutside of or from the header ,while .the

heads -of -the upper element are attached stance, forming a gasketwhich, when near the inner or rear side. The location of these heads maybe varied without departing from the essential features of theinvention.

If it is desired to make a series of four superheating pipes for eachpair of heads, then there will-be only one set of`four pipes located in,each tube, and there. will be-only .one row of heads, which will gered.

In the construction shown in the drawings, if the two s 'uperheaterelements are removed from one of the tubes of the boiler then this tubeof the boiler may be removed, if necessary, without disturbing the othersuperheater elements, although, in some instances, it may be desirableto remove more,

than two superheater elements if more freedom for removing the boilertubes is desired.

The header D is mounted on brackets s, .s secured to each side of thecasing of the smoke box section of the boiler, and it is lnot be stagi/azlso suspended by rods s from the top of 'the smoke box section; theheader'being shaped as illustrated in Fig. 7 to allow for 'this methodof attaching, but it will be un- "derstood that other means forattaching the super-heater to the boiler may be resorted to withoutdeparting from the main features of the invention.

v We claim l. The combination in a boiler having a smoke box and tubes,of a superheater having a header mounted in the smoke box and pipesextending from the header into the tubes, the header having a manifoldat the top and bottom and a series 'of columns spaced apart, saidcolumns being hollow, the alternate columns connecting withthe uppermanifold and the other columns connecting with the lower manifold, witha head on the end of each pipe, said heads being located in thespacebetween the two 'columns, and

means for forcing the heads apart and against the columns so as to makea steam tight joint between the heads and the columns.

2. The combinationin aboiler, of a series of flue tubes, a superheaterhaving a series of pipes extending into the flue tubes, aheader having aseries of spaced-hollow columns an'd upper and low-er manifolds, thealternate cplumns being connected to the upper manifold and the othercolumns to the lower'manifold, said columns having furthermore openingsin their side walls, and the pipeshaving heads located vwithin the spaceIbetween the columns and connected to the openings of'said columns, theupper manifold being connected to the'steam space of the boiler and thelower manifold being connected to the stea'm chests of the cylinders.

3. The combination in a superheater, of a locomotive boiler having asmoke box and Hue tubes, a superheater having a header bottom,

Y extending into the flue tubes of located inthe smoke boX ofthe boilerand made of a single casting and having spaced tubular columns,manifolds 'at the top and the upper manifold connecting with alternateVcolumns and thefother manifold connecting with the other columns, aseries of pairs of heads mounted in the space between the columns, meansfor separating the heads and for forcing them against the walls of thecolumns, withpipes secured tov each 'head and extending into a flue tubeof the boiler, said pipes-being connected at ltheir outei ends so thatthe steam will circulate in its passage through the superheater. 4. Thecombination in a-boiler having a smoke box and a series of flue tubes,ofa superheater having a header located in the smoke `box and havingvertical hollow columns spaced apart, with upper land lower manifolds,the upper manifold connecting Y with alternate columns and the'lowerman1- fold connecting with the other columns, the side `walls of eachcolumn h aving openings therein, heads mounted in the space between thecolumns and arranged to aline with the openings in the walls of thecolumns, means for securing a circulating pipe attached to each head andthe boiler, said circulating pipes being connected so that the steamwill circulate therethrough, as it passes from the steam spaceof theboiler to the cylinders. a

5. The combination in a superhe'ater, of a header having columns spacedapart, one for saturated steam and, the other for/.superheated steam,there being an opening in the side of each column, superheatingv pipes,a head secuted to each' pipe, said pipes being connected, one headbeingarranged'fin line with an opening in one c" lumn and the other.

line with the openmeans for forcing a'steam the col,-

head being arranged in ing in the x)ther column, the heads apart,andi-rings formin tight joint between the heads an umns.

6. The combination of two hollow columns, the side Walls of each columnhaving openings therein, one of said columns being for saturatedsteam'and the other for superv heated steam, circulating pipes connectedat their outer ends, a head onv each circulating pipe, said heads havingopenings adapted to aline with the 'openings in a column, a bolt locatedbetween the two heads, and a wedge on the bolt, so that on turning theAbolt the wedge will force the heads apart and against the sides of thecolumns.

T. The combination in a boiler having a smoke box and flue tubes, vof asuperheater consisting of a header mede of a series of hollow columnsand upper and lower. manifolds, the columns having two sets of lateralopenings, said openings .being staggered; two sets of circulating pipeslocated in each theheads to the columns, and

iue; a head on thefend of each-pipe and located between thecolumns;.1j1eans for forcingthe .heads of the circulating pipes againstthe columns ofthe header, thepipes of each set bein@r connected at theirouter ends, the heads ol? one, series of}f i'iies being attached to theheader near'th'e reargjhereof and connected with one series ofopenings', and Y the heads of the alternate series of pipes bel ingattached to the header 'near the front thereof andconnected to the otherseries of openings, whereby a number ofy pipes can be placed closetogether without one 'set of heads interfering with theother set.

8. The combinationfpin a superheater, of a header having passagesjspacedapart, one for the saturated steam and the other for the superheatedsteam, the side walls of the header having openings therein, circulatingpipes connected at one end Aand having sepa'- rate heads at the otherend, said heads being mounted in the passages ofthe header, each 'headhaving a right angled passage forming communication between the pipe andthe passage' ,there beingy a conical opening' formed between the twoheads, `la conical Wedge mounted in the Isaid opening, a bolt extendingthrough the wedge, with a nut located between the tubes of adjacentheads whereby they are prevented from turning so that on turning thebolt the wedge will be forced linto the space between the two heads andwill cause the heads to bind against the walls of the sections formingthe passages. y

9. rlhe combination in a locomotive, of a boiler having a smoke box anda series of iue tubes communicating with the smoke box, one'setbf duetubes being of greater diameter than the other set, a superheaterconsisting of a header and circulating pipes, the header being mountedin the smoke box -k of the boiler and the circulating pipes extendinginto the flue tubes of large diameter, the header being made up of aseries of hollow columns. and manifolds at the top and bottom, the uppermanifold b'eingrconnected to alternate columns and the lower manifoldbeing connected to the other columns, ahead on the inner end of eachpipe, means located between the heads for forcing the said heads apartand against the walls of the columns of the header, the outer ends ofthe pipes being connected, a steam pipe leading from the steam space ofthe boiler, the Lipper manifold being connected to said steam pipe, andsteam pipes leading to the cylinders of the boiler of the locomotive andcommunicating with the manifold, so that the steam as it comes from theboiler is passed through the circulating pipes, which come in directcontact with the products of combustion passing through the boiler. 10.The combination in a locomotiveboiler having a tube sheet and horizontalflue tubes and also having' a smoke box section, vvith af in their sideWalls, and al plurality of superi superheater havingI a header locatedWithin the smoke box in front of the sheet',"and naving throughpassages',- circulating pipes 'extending into the flue tubes and h avlngheads located'fin the vthrough lpassages and connected laterally withthe header, of -means for coupling the heads of the circulating.-

pipes to the'header, ysaid means being accessiblthrough the passages inthe header.

11. A header for a superheater made in a single casting and havingspacedhollow' columns, With a manifoldat the top and a mani-- fold at thebottom, the upper'mani'fold being connected with alternate columns andthe other manifold being connected Witli the other columns. A

12.' The combination in1 a boiler, of a series of flue tubes, aheaderhaving a plurality of spaced hollow columns and upper and lowermanifolds for Wet and superheated steam respectively, thealternatecolumns bi'ng connected to the upper Amanifold and the other columns tothe lower manifold said columns Having, furthermore, openings .heatedelements extending into the iue tubes the ends of each element beingconnected to openings in adjacent columns.

13. The combination in a.boiler, of a series of Hue tubes, an integralcast header...

having opposite manifolds for Wet and sup-i erheated steam respectivelyandconnected by a series of spaced hollow columns, alternate columnsbeing connected tc on manifold ,and the remaining columns to the otherlmanifold said .columns having furthermore, openings in their sideWalls, and a plurality of superheater elements extending into thefluetubes the ends of each element .being connected to adjacent Walls ofneighboring columns. .y

In testimony whereof, We have` signed our ,names to this specification,in the presence of twol subscribing witnesses.

GEORGE R. HENDERSON. WILLIAM I. CAN'ILE'Y. Witnesses:'

LoUIs H. BENDER, J. H. KERST.

